Automatic lathe.



PATENTED OCT. 30, 1906.

y vJ..BUCKLBT.

AUTOMATIC LATHE.

APPLIQATION FILED IULY22.190-4.

9 SHEBTSTSHBET 1.

Y Nm A mm .AA .M. N.%\/. QNMLIH ..9 0% m w v v@N T v T R/WV o m d n m w@www www@ ATTORN EY PATBNTED 00T.' 3.o,4 190e. I

J, BUGKLEY. AUTOMATIC LATHB.

APPLICATION FILED I ULY 22. 1904.

9 SHEETS-SHEET 2.

, PATENTED OCT. 30, 1906.

J. BUGKLEY. AUTOMATICl LATHE.

APPLIGATION FILED JULY gz. 1904.

9 SHEETS-SHEET 3.

'w|TNEssEs:

PATBNTED 00T. ao, 190e.

J. BUGKLEY. l AUTOMATIC LATHE.

'APPLICATION FILED JULY22. 1904.

WITNESSES: v L Si @2a/m No. 834,359.` PATBNTED 00T. so, 190s. LEUCKLEY.

AUTOMATIC LATHE.

l APPLICATION FILED JULY 22.1904.

9 SHEETS-SHEET 5.

No. 834359. BATENTED 00T. so, 190e.

J. BUGKLEY.

` AUTOMATIC LATHE.

APPLICATION FILED JULY 22.1904.

' 69 194 M3202 4my. 03 u Fl Gr.17.

lNVENTOR W T' 02W l A a I 252. :Q I `ATTONEY PATENTED 00T. so, 1906.

J. BUCKLEY. AUTOMATIC LATHE. AHLIOATION FILED JULY22.1904.

9 SHEETS-SHEET 8.

PATBNTED oo T. so, 1906.'.

J.- BUCKLEY. AUTOMATIC LATHE.

APPLICATION FILED JULY 22, 1904.

' s misma-sum1 9.

lNVENTOR vllTNEssEs: k

' To all whom it may concerm UNITED sTATEs PATENT OEEIOE.

JOHN BUOKLEY, OE WATERBUEY, OONNEOTIOUT, AssIGNOE OE ONE-HALE To GEORGEH. lBENJAMIN, OE NEW YORK, N. r.`

- AUTOMATIC; LATHE.

Specification of Letters lPatent.

Patented oct. 3o, 1906.

i, Application filed July22, l1904. Serial No. 217.743.

Beit known that l, JOHN BUOKLEY, a citizen of the United- States,residing at Waterbury, county of New Haven, State of Connecticut, haveinvented certain I:new and useful Improvements in Automatic Lathes, of

l which the following is a specification.

My invention relates to a lathe which may be employed for turning orscrew-cutting, as

desired.

Broadly stated, my invention consists in a lathe in which thecutting-tool is first adjusted to the work, then makes a cut, then isau- ,i tomatically moved from the work, returned to its first position,and fed forward to the work, such tool making. successive cuts until thematerial acted upon is reduced to the required size (turning) or hasformed in it the' required screw-thread, as previously determined andwhich the machine has been adjusted to produce. .4

My invention further consists in a con- -struction by reason of whichthe lathe is made adjustable for cutting right or left hand screws ofany desired-length, pitch, or depth of cut.v I

My invention further relates to various details of construction, whichwill be described in the specification and specifically pointed out inthe claims. j

The object of my invention is a lathe in which the work the lathe isdesigned'to do may be automatically carried on from start to finish orcontrolled by hand, and, further,l

which may be adjusted to cover a Wide range of work and doa greatvariety of work en.-

' tirely automatically, thus permitting the use of unskilled labor or askilled lathe-tender to tend a number of lathes simultaneously.

The general"` operation of my improved lathe is as follows: The tool isfirst adjusted to the work. `The tool-carriage then carries the tool tomake the first cut. The tool is then automatically withdrawn from thework and carried back by the reverse movement of the tool-carriage toitsfirst position, the movement of the tool-carriage at such time beingy of out is reached, at which time the machine is automatically thrownout of action and comes to rest.

The lathe is adjustable and may be controlled by hand for cutting rightorleft hand screws. j

The lathe is also adjustable for turning work con-trolled by hand orautomatic mechanism. y

The speed of lead-screw can be changed, also the direction of rotation,or it can be thrown out of action, leaving the spindle free to be usedfor finishing work.

Figure 1 ofthe drawings is a side elevation of my improved lathe withthe means for driving it adjusted to automatically cut a right-handscrew-thread. Figs. 2 and 3 are details of a portion of the automaticdevice adjusted for cutting a right-hand screw. Fig. 4 vis a similarview when adjusted for cutting a left-hand screw. Fig. 5 is a sideelevation of. a vportion of the lathe with the parts in position whenthe limit of out is reached. Fig. 6 is a detail of a clutching device onthe lathe-spindle. Fig. -7 isa detail of a rock-shaft operated yby thetool-carriage. Fig.- 8 is an end elevation of the lathe. Flg.

9 1s a transverse sectional view on the lineA 9 9'of Fig. 5. Fig. 10 isa detail of an adjusting device for changing the speed of the leadscrew.Fig. 11 is a transverse sectional view on the line 11 11 of Fig. 5. Fig.12 is a de tail elevation., partly in section, showing the vdriving andspeed-changing gearing. Fig.

13 is a sectional plan View on the line 13 13 of Fig. 5. Fig. 14 isadetail of an adjustable slide for adjusting the speed of the leadscrew.Fig. 15 is a detail of a reversingclutch for changing the direction ofrotation of lead-screw. Fig. 16 is a detail of a portion of thedevicefor withdrawing the tool from the work, tobe used for internalcutting. Fig. 17 is a sectional plan view on the line 17 17 of Fig. 5.Fig. 18 is a detail of the means for changing the speed of thelead-screw. Fig. 19 is a detail of adjusting device for changing thespeed of lead-screw. Fig. 20 is a sectional plan view on the line 20 20of Fig. 5. Fig. 21 is a sectional view on the-line 21 21 of Fig. 20.Fig. 22 is a sectional view on the line 22 22 of Fig. 21. Figs. 23, 24,'and 25 are perspective views showing different positions of the partsshown in Figs. 21-and.

Ioo`

22. Fig. 26 is an enlarged sectional view on the line 26 26of1 Fig.' 13.Fig. y27 is an enlarged sectional lan view of aportionof thetool-carriage. `ig. 28 is a sectional view on the line 28 28 ofl Fig.26. Fig. 29 is a sectional view on the line 29 29 of Fig. 26. Y Fig.

30 is a sectional view on the line l30 30 lof Fig.

26. Fig. 31 is a detail of adjustment of parts for turning work. Fig. 32is a detail of an adjusting device to be used forturning work. y

-Secured to counter-shaft 1 is -a cone-pulley'2,which,-throug'h belt 3,drives the-conepulley' 41,- loosely mounted on ,thel spindle 5' ofl thelathe. Upon the shaft 1 is a bevel lgear-vheel 6,-rotatedby the shaft bymeans of a slot 7 and-key in the gear-wheel and capable of being throwninto mesh witha bevel'4 gear-wheel- 8,.secured to a pulley 9,

which by means of belt 10 drives another 'ivlglit to gear-wheel 18',secured to spindle 5.

en desired,clutch device 17 can be withdrawnfromgear-wheel 1'8 and theback gearwh'e'el 19 thrown-into engagement with gearw'heel 16v by meansof eccentric 20, Fig. 8, causing the spindle 5 to be drivenf at a slowerspeed throughthesleeve 21 and small gearvwheel 22,- meshing withgear-wheel 23,v secured? to'the'spindle. By means of the usual attachingdevices 24 the work 25 is secured to spindle 5. 4

Meshng 'with gear-wheel 18 is a small gearwneel 2'6, with abroad face.IOne portion of gear-wheel 26 meshes with a gear-wheel 27, turningloosely on a shaft 28. The other portion meshes witha small gear-wheel29, secured to' a sleeve 30, to which is secured another smallgear-'wheel 31,- meshin with a gear-wheel 32, turning loosely on sha t28, by which means a collar 33,ope1ating'a clutchlever 34, pivoted inaslnt formed in the shaft @28, will cause the shaft to be turned in onedirection or the other, according to which-of the `gear-v\`rheels 27 or32 is engaged by clutchlever 34, Fig.

Gear-wheel 26 and the sleeve 30, havinV the gears 29' and 31 attached,are mounte upon a frame 35, which is pivoted upon the shaft 28'. Apvoted' connection 36 to the frame en| ages the head-stock 37 by thenotches' 38, y which means the gear-wheel 26 can be held in mesh withgear-wheel 18 or thrown out, leaving the spindle free for finishingwork.

' Upon the outer end of shaft 28 loosely mounted a cone series ofgear-wheels 39, and a sliding'key 40 is fitted in the shaft and lwithgear-wheel 43. ibeing rocked upon the shaft 42 in or er that adapted-toengage any one ofthe ears 39, which being in mesh with gear-w eels 41turn shaft 42, to which gearrwheels 41 are secured. A gear-wheel 43 is.turned by shaft 42 by means of a slot formed in the shaft and `alrey inthe gear, which can be worked along the shaft by means of a frame 44,which carries gear-wheels and 46, which are in mesh Frame 44 is ca ableof the gear-Wheel 45 may be placed in mesh with any one of a coneseriesofgear-wheels 47, secured' tol shaft' 48, or' that the gear-Wheel546-may be laced in mesh with-any one of a cone seri' es ogear-wheels 49 ,secured to shaft 50. A slot' 51X is forlnedin frame44,in which rides a pin formingpartofa slide 52, in which is iitt'edv anadjustable pin153, which when fitted in onecf aseriesof holes 54 causethe gear-'wheel 46 to engage'one of- -the gear-whee s 49, or if fittedintoone off a-series of holes cause the gear-wlieel' 45 to en age one'of the gear-whee s 47.

f the pin1 53 be placed? midway between the holes 54 and 55,-then thegear-wheels- 45 and 46 do not engage with the gear-wheels 47 and 49.-Frame 4-4' is then free to be moved alon the shaft 42, slide-52 beingheldin` the mid le yposition by a spring-pressed pin 56, fitting in arecess formed inthe slide. Pin 56 is' fitted in -a' slide 57, whichserves as a gu'ide for the slide 52 and which isguided by an inclinedslot 51, the series of holes 54 and 55 being alongside and parallel. Theinclined' position of the holes and slot correspends-with the-positionof the gear-wheels 45 and 46 when in mesh with the differentgear-wheels"fo'rxningV thecone-gears 47 and 49. Shaft 48 has agear-wheel 58 secured to it, which can be put in meshwith a slidingadjustable gear-w eel 59 on a stud-shaft 60, gear-wheel 59v being atsuch time in -mesh with a gear-wheelA 61, secured' to a smallergear-Wheel 62, provided with a clutching device 63, Whch at this time isthrown out, leaving the ear-wheels 61 and 62 free Ito turn on` the s aft50. Gear-wheel 62 being in mesh with a large gear-,Wheel 64, having theadjusting device 65, drives the leadscrew 66. t a slow seed., orgear-wheel 64 can be thrown out c ar with gear-wheel 62 and gear-wheel67, aving the' adjustin device 68, thrown into gear with gear-whee 61,causing the lead-screw to be turned at a greater speed. The lead-screwis turned b gear-Wheel 67 by means of a slot inthe lea screw and a keyin the gear-wheel. When the gear-wheel 59-is thrown out of mesh withthe' gears 58 and 61 'and the clutch. device 6-3 thrown in, then thelead-screw is driven b the sha-ft 50' by either one of the gear-whee sIIO 61 and' 62, according to the position of the gear-wheels 64 and 67.50, to whichv are secured the cone series of gear-Wheels 47 and 49,serve to drive the The shafts 48 and larger than gear-Wheels 49.

I cranks coming in contact with the si'des of gagement with gear-wheel16, causing the.

speeds, accordingto gear-wheels 47 being vBy removing gear-wheel 62 fromgear-wheel 61 and placing it on the lead-screw 66 and .by removinggear-wheel 64 from lead-screw and attaching it to gear-wheel 61 anotherchange can be Ilpade in the speed of lead-screw, as shown in ig. 18.. l

The lead-screw 66, turning'in split nut 69, moves the tool-carriage andapron 7 0 toward the head-stock, when adjustment is made for cutting aright-hand screw-thread. A bellcrank 71 is pivoted to the end of aprontoward the head-stock and a similar one 72 to the opposite end, theupper vend of belllead-screw at different which is in gear, the

corresponding toothed wheels 7 3 and 74, .adjustab y secured 'tooppositel ends of a rockshaft 75, causing the lower end of bell-cranksto rise, which, taking under the tooth of wheels 73 and 74, willv givethe rock-shaft a Ipartial rotation as the carriage nears the cad-stockand as it nears the 'end of its re`-' turn movement. This shaft 75through interme be described, withdraws artial rotation of iatemechanism, to clutch 13 from entool-carriage to come to a standstill.

Rock-shaft 75 has a slot 76 extending its entire length, which serves toturn a gear-segment 77, having a key to fit the slot and moved along theshaft by the apron. Gear-segment 77 is in mesh with a bevel gear-Wheel78, to which is attached a bar 79, upon one end lof which is connected alink 80, connecting it to a gear-segment 81 in mesh with a gear-wheel82, secured to a shaft 83, on the other end of which is secured agear-wheel l84, which by means of the racks 85 operate the jaws of thesplit nut 69. By the means above described t e split nut 6'9 is thrownout of engagement with the lead-screw when the end of cut is reached.Split nut 69 can also be controlled by means of hand-crank 86, which issecured to shaft 83. There are two gear-segments 77 adjustable in theapron 70, so that one segment will be in engagement when adjustment ismade for cutting a right-hand screwthread, the other gear-segment 77being in engagement when adjustment is made for cutting a left-handscrew-thread. The gearsegments 77 can be adjusted in a central porsition out of engagement with gear-wheel 78, in which case split nut 69will not be operated by rock-shaft-75, but can be operated by thehand-crank 86. I

Tothe upper end of bar 79 is adjusted a pin 87, engaging the slotted endof a pivoted ever 88, the opposite end of the lever being provided witha movable portion 89, having adjusting-screws 90, which take against onearm of a bell-crank 91, pivoted upon a shaft 92, the other endvof thebell-crank carrying a double-ended pawl 9 3, capable of adjustment foradditional cut.

by means of a spring-pressed pin 94, to engage a rachet-wheel 95,formingjpart of a short screw 96, to move it in one direction or theother. Screw 96 works in a nut 97, havinga pin 98, which rides in aspiral slot 99, formed in the removable part 89 of the lever 88. Thespiral slot and the pin cause withdrawal or advance of the nut 97 andshaft 92 when the lever 88 is swung on its pivot. Shaft 92 has ashoulder against whichv the screw 96 bears, the shaft extending throughthe screw, bell-crank 91 being pivoted upon the shaft and held againstthe opposite end of screw 96 by a hand-crank 100, secured to the shaft.Shaft 92 can be turned by the hand-crank 100 and by the cross-feedgearwheel 101 by means of. a slot formed in the shaft and a key in thegear. The other end stock 102, carrying the tool 103. The tool 103- is`adjusted to the work by turning the screw-shaft 92 and hand-crank 100,the screw-shaft being held in position by screw 96 yand nut 97.

When the tool-carriage reaches the limit of its cut, part 89 of pivotedlever 88 will be moved from the osition shown in Fig. lfin the directionof t e arrow shown in Fig. 5, in doing which slot 99, acting on pin 98,vwill withdraw nut 97 from the tool-carriage, carrying tool 103 with it.set-screw will move bell-crank 91, causing pawl 93vto turn screw 96,forcing tool in for an additional cut. j

When adjustment is to be made for interof shaft 92 is screw-threadedinto the toolnal cutting, the removable part 89,'(represented by Fig.16,) having the slot 99 inclined. in the opposite direction from the oneused for external cutting, xwill be attached to pivoted lever 88anddouble-ended pawl 93will 4be adjusted to `turn ratchet-wheel 95 and'screw 96 in the opposite direction, resulting yin a reverse movement oftool 103.'in withdrawing it from the work and feeding it in4 y When theart 89 is removed, the nt 97 is held in p ace by screw 104. -U onthe-end of rock-shaft 75, near the hea -stock, is a bevel gear-'wheel105 in mesh with Aa bevel gear-Wheel 106, turning upon a stud-shaft 107.Bevel gear-wheel 106 hasa weightedarm 108 attached, also a pin 109,which yextends. through a short slot 110 in a cam-disk 111, having a pin112 extending through a short slot 113 in a segmental gear 114. On aradial line with the slot `are two longer slots 115 and 116. Riding inslot 115 is a pin forming art of an arm- 117, secured to av sleeve 118,aving an arm 119 connected to a slide 120,y which actuates theclutch-collar 33, as shown in the drawings,l to clutch-gear wheel 27 toshaft 28. Riding in slot 116 is a lpin forming part of arm 121, securedto a shaft 122, extending through sleeve l118 and having an arm 123,connected by the bar 124 to a pivoted lever IOS l radial line with slot126 are the two longer, slots 127 and 128. Slot 127, operating arm 117,serves to kee clutch-collar 33 in a position to `cause the ead-screw torotate in the opposite direction, forcing the tool-carriage .away fromthe head-stock. vSlot 128,

` operating arm 121 serves to. throw clutch- Sie - 140'.l Mountedloosely upon shaft 141 next vto arm 142 is a gear-wheel 146, driven by a4can engage the notches 138.

collar13 out of engagement with gear-wheel 16 when thetool-carriagenears the. end of its travel away from the head-stock.

When cutting right or vleft hand screws without using the automaticdevice, in 109 will be fitted in a hole 129: Qn a ra ial line with hole129 are the two long slots 130 and 131..` Slot 130, operating arm 117serves to change the direction of rotation .ofleadvscrewA when disk 1,11is rotated. Slot 131,

operating arm 121, serves to keep clutchcollar 13 in eng-agement withgear-wheel 16. As the bevel gear-wheel 106 with the pin 109 "rotates,the d1sk 111 does not rotate until the limit of short slot 110 isreached. Then the disk rotates luntil the pin 112 on disk reaches thelimit of short 'slot 113' of segmental gear 1 14. The movement of disk 11 1 and segmental gear 114 is continued by pin-109 on bevel gear-wheelV106 -from bevel gear-wheel 105 until-the, weighted arm 108 passes overthe center, which takes place when the center of long-slots 115 and 116are just over the center of gearwheel 106. It is during this movement oldisk 111 thatO clutch 13 is .thrown out of engagement with gear-wheel 16by means of long slot 116.

When the weighted arm over the center,- it then serves to continue therotation of disk 11.1 `and gear-segment 114. vGear-segment 114 is inmesh with a gear-wheel 1.32, secured to a shaft.133, to` -which issecured a cam 134 and a gear-wheel 1135 in mesh with a gear-wheel 136,having a rim 137 with twov notches 138 on one sideoic it and. a'rim 139with two notches 140 on the oppositev side. The rim gear-wheel 13 6 ismounted loosely upon a shaft 141 and keyed l to the-shaft inside the rim137 is an; arm 142,

having a spring-pressed plunger 143, which Inside the rim139--is-angarm'144, keyed toshaft 141, extending radially at 'rightangles to the direction-of arm 142 and having a spring-pressed plunger145, which can engage the notches gear-wheel 147, secured topositively-driven Gear-wheel 146 has apin 148 in Gear-wheel 146 hasinternal gear-teeth 149, (which mesh with a t en inthe other.

=tuates a 108 has. passed small gear-wheel 150, secured lto a Ashortshaft 151, u on the opposite end of which is another sma l gear-wheel152 in mesh with a gear-Wheel 153, mounted loosely upon shaft 141 andprovided with a pin 154 in line with rim 139 and in osition to beengaged by lunger 145. P ungers 143 and 145 are eld out of engagementwith the notches in the rims 137 and 139, in lone ease by the rims, inanother b fixed cams 155 and 156, which throw the p ungers out of enagement with the rims. Shaft 141 is held 1n place by an arm 157, securedyto one end and having a `spring-pressed plunger 158, which engages withnotchesA 159 and 160 after making a uarter-revolution, irst in onedirection, The end of plunger 158 is made tapering to allow it to esca ethe notches 159. and 160 whensuicient orce is applied to rotate shaft141. Cam`134 acpivoted lever 161 and clutch-collar 162, sliding upon ashaft 163, which is turned by meansof a slot formed in the shaft and akeyin the collar when the collar is throwninto engagement with.positivelydriven shaft 12.

By means ofa'bevel gear-wheel 164, secured` to shaft 163, meshing withbevel gearwheel 165 or 166 a shaft 167 is turned.. By means of theadjusting device 168, fitting in one of three holes 169 in Ishaft 167,the double gear-wheel 165 166 may be en aged on either side ofgear-wheel 164or isengagedrom gear-wheel 164. Aslot extends through thehub of gear-wheel 165166 and a key is fixed firmly in shaft 167, thekeyA being iitted to allow the double ear to be moved endwise. Bythismeansghaft 167 may be turned in either direction, which will by means tobe described move the tool-carriage 4 7 0 .in one direction or theother.

`The movement of gear-segment 114 from` the position shown in Fig. 2 tothe-position shown in Fig. 5 moves cam 134,romthe position shown in Fig.423 tothe position shown in Fig. 20 and the rim gear-wheel 136'rom theposition shown in Fig. 23 to the position shown in Fig. 21, the notch138 being nearly in line with (plunger 143 of arm 142 and the -plungerhel .l

Jfrom engagement. by the rim 137.` It is at this time that weighted army108 comes into action to continue the movernent of rim gear-wheel 136until notch 138 shall be in line-with plunger 143,'when the plunger willdrop into the-notch. Plunger 143-,i dropping into notch 138,--is now inhne ,of travel of pin 148 on the ositively-driven gear-wheel 146,causing p unger 143, arm 142, yshaft 141, and rim gear-wheel 136 to beturned until plunger 143 is thrown out of notch 138 -by means of iiXedcaml 155,as

shown in Fig. 24. This movement of rim gear-wheel 136 .will `betransmittedto cam 134, moving itrom theposition shown in Flg. 20 to t eposition shown in Fig. 24, the

inclinedportion of cam-operating lever 161 to throw clutch-collar 162into engagement with shaft 12 resulting in movement of rim tool-carriage70. In addition to moving cam 134 the movement of rim-gear 13.6 will bymeans ofshai't 133 and gear-wheel 132 be transmitted to gear-segment 114and camdisk 111, causing them to occupy the position shown in Fig. 3.

Referringto Fig. 24, plunger 145 will new,

be the one which is held Jfrom engagement with notch 140 by rim.139.Whenthe toolcarriage 70 nears the end of its. movement away form thehead-stock, rock-shaft. 7'5 is rotated in .an opposite direction by'bellcrank 72 taking under'tooth 74 on the oppo- -in line oftrave of pin154 on.'po-'sitivelydriven gear-wheel 153, rotating in a direction thereverse of gear-wheel'146, causing plunger.145, arm 144, shaft 141, andrim gear- Wheel 136to be turned until plunger 145 is thrown out of notch140 by means of fixed c am 156,- as shown in Fig.l 23,-cam 134.being.moved from the-position shown in Fig. 20 tov 4theposition-shown in Fig..23, the straight portion of cam having no effect `u on'lev'er 161,gear-seg1nent 114 andv cam-dis 111 being movedto the positionshow'n linFig. 1.

The purpose vof elongatingv the. hole 113 in segmental gear 114 is thatdisk 111 will be a little behind in driving ear-wheel 132, causing thespring-pressed p ungers to be delayed in dropping in the notches-'of rimearwheel 136 as weighted arm'108 passes "t dicular. This intermissiongives time for stop-motion work. i

When adjustment is-made for cutting lefthand screws with vcam 134 in thepositionA shown iniFig. 24,v arm v14.4 will be turned to the positionshown in Fig. 21, as shown in' Fig. 25.A As the tool-carriage 70 nearsthe headstock on'its'return to m'ake a new cut cam 134 willI be moved inthe direction of arrow in 25, the inclined portion of cam.

moving lever 161 tostop the tool-canjiage.

The action of rim gear-wheel 136, plfn ersl 143 and 145, and gear-sement 114 and iskI 111 is the -same as that escribed for Figs.' 21

and 21 except that lon slot 12.7, through 'arm 117, causesthe lea -screwtol rotate in 'the opposite direction and `that'long slot 128,

through arm 121, throws clutch-collar 13 l. .into engagement -Withgear-wheel 16 in the shaft 167 bevel gear-wheel 165 will be e perpen.-

last part of movement of disk 111 to cause the rotation of lead-screw.

Changing the direction of rotation of lead- 'i screw causes thetool-carriage to be moved away from the headstock in making the cut,

and in order that the tool-carria e shall be returned toward thehead-stocky y means of put in mesh with bevel gear-wheel 164.

When the automatic mechanism isnot in` use, b evel gear-wheel onthecounter-shaft'l is disengaged from gear-wheel 8 the disk 1 11 is turnedso that pin 109 on gear-wheel 106 can be inserted 1n hole 129 of thedisk, weighted arm 108 is removed from gearwheel l106, and gear-wheel132 is withdrawn from meshwith segmental-gear-114. When gear-'wheel 132is replaced, .marked tooth.1

of segmental gear'1-14` will. occupy space 1 of gear-wheel'132 for rightscrew-cuttin or marked tooth 2 of segmental gear 114 wi l oecupy space 2of gear-wheel 132 for left-hand screw-cutting.

When camdisk .111 is adjusted for handwork, `cam 134 will be rotated'inthe direc- Vtion indicated bythe arrow in Fig. 23 until lever 161 ridesin straight part of cam.'y Any further movement of cam caused b rotationof disk 111 will n ot change the positionjof lever 161, as 1it willstill'ride in the straight',

part of cam 134, kee clutch-collar 162 out of engagement'wit shaft 12. I

Cam-dlsk 11 1 can'be rotated by means of a hand-lever 170 on rock-shaft75 and held in any one of three positions-central or two opposite. Inone position'of disk 111,10n slot 130, through'arm 117.,"willfcause lthecad"- screw to rotate in a direction'tocause the tool-carriage "to -movetoward the 'headstock. In theV central vpositionlead-screw will notrotate. The opposite' end of long slot will cause the lead-screw torotate" the op osite direction. Hand-lever 170,

having a e -to ride in slot 7 6 [of "rock-shaft 75, is move along theshaft bythe ftool-cairia e. A pin 171 1n the free end foflever 170 Aisitted in oiie of vthree notches' 172 on thel tool-carriage, or the pincan' be thrown o'iit of engagement by' means of a spiral cam 17 3',leaving the rock-shaft 7 5 free to be moved, as before described, whenthe vautomatic mechanism is in use. 4Shaft 167 has a vslot174 its,-.enrtire length, which turns a bevel gearwheel 175, having'a key toride'hin the slotand mounted on the tool-carriage 70. Bevel gear-wheel175 meshes withI a s bevel gearvwheel 176 securedto a short shaft v177,`to

the other end of which is secured a gearwheel 178 in meshwith a rack 179on the lathe-bed. As' shaft 167 is turned gearwheel 178 is turned,which, taking a ainst the fixed'rack 179, causes movement o thetoolcarriae'70, which is much faster than when move v [by lead-screw 66.

' rod 180, which as the tool 103 is fed to the J n3" i l 834,359

' Securedy to .the tool-rest `102 is a hooked work 25 engages a-slide181, provided with a rack 182, Which engages a. pinion 183, to Whichasegmental gear 184 is attached. 'Segmental gear 184, meshing With a rack185, forming. part of a slide 186, causes slide 186 to move agreaterdistance than tool-rest 102. An adjustable bar 187 is attached to slide186, one end having graduation-marks and supporting-a rod188,.attachedto.a paWl 189, pivotedto the tool-carriage. One portion ofthe free endfof -pawl l189 is shaped to engageza tooth 190,'. the .otherportion of-pawl being sha ediasa hookto engage a tooth 191 facing in.; eopposite direct1on, the teeth- 190,-and 191 formlngpart of a sleeve 192,having a key to.ride in slot.76 ofA rock-shaft '75-.and movedalong the`shaft by the tool-carria e.

When, the. :final de th of cut is reache by toolf103,l rod 188, W ich issupported. by bar 187, Will be released, throwing. pawl 189 into engaement with the teeth 190 .and 191, of the s eeve 192. Y

AThat part off. the movement. of rock-shaft 7.5- controlled lby theyWeighted 4arm -108 is checked bythe paW1;189 engaging either tooth190.or 1'91,.according to direction ofretationof rock-shaft. .If therotation of rock- .shaft.7.5 is stopped before the rim gearwheel 1-36releases .one ofithe :plungers 143 vor 145, cam 134 will 'notoperatelever 161. vand clutch 162 to cause rotation of shaft 163. lThe tool-Oarriagenot'beingreturned to make Va new cut, everythingremains at rest.

For 1 turning -.work, which may be :automatic or b hand, the device nowto be described-.Wil be used.

The lead-screw 66 hasa slot 193 its entire length, which turns 1a Worm194, having a ,key to4 rideV in the-slotand moved alongthe lead-screw bythe tool-carriage. Worm. 194

turnsa Wormfwheel 195, turnin loosely upon a hollow shaft: 19.6, theWorm-.W eel being engaged-by a1frictionclutch197b means of screw-shaft1198,'turned by the and-Wheel -199. Friction-clutch 197 turns thehollowShaft 19.6by means of slots formed-in the .shaftand projections-fromtheclutch, the .shaft-19.6 having gear-wheel 200 vkeyed to it, lwhichmeshes Witha large gear-Wheel201, secured to a sleeve 202,having a smallgearwheel :20.3 securedto it, which meshes W1th rack:17.9,. causingtheitoolvcarriage to move slowly in-one' direction or another,according'- to direction of rotation oflead-screw. Gear- .vvheel 200,keyed to hollow shaft 196, canbe turned by land-:Wheel 204, which isalso ke ed to shaft 196. Friction-clutch 197 is holding-position to-bethrown in or out ofengagement with wormfwheel 195 `throughserewfshaftf198 by; means of an arm 205, se-

,curedtoa shaft'- 206 intl-1e hub of. hand-wheel 199 and held inposition byeatch 207, the arm 205 'riding in a groove 208, formed in thehub of hand-Wheelf204, as-shown .by -dotted lines in Fig. 32.

For turning-work, :using the automatic mechanism, friction-clutch 197 isconnected bythe strips 209 to a collar 210, controlled by a pivotedlever 211, which by means of a spring 212 is forced against cams 213 and214, having a key to ride in slot 76 of rockshaft 75, moved along therock-shaft and adi justed by the device 215, so thatl one cam will be inuse to throw friction-.clutch 197 into engagement with Worm-wheel195/.when the tool-carriage is to be moved in one direction,the othercam being in use when the tool-carriage is to be moved in the opposite-direction or;adjusted so that lever`211 being in the center is notoperated by the cams 213 or 214, in which case friction-clutch 197 willnt be thrown into engagement W-ith worm gear-Wheel195 by the automaticmechanism.

When the .automatic mechanism is in use, the arm 205 isthrown outofengagement -With the.v groove .208 in the hub of hand- -wheel 204,leaving the friction-clutch `197 free to be. movedbythe automaticmechanism', screW-shaft198 being held inplace by a spring-pressedpn.216,1 riding inv a. roove 217 in the hub of handheel.:199, hol ing itto the hub of hand-Wheel 204. l

For turning-Work .part 89 .is removed from pivoted lever 88 and nut 97secured to toolcarriage by means ofscrew 104.

.Having thus. described my invention, I claim- 1. In a lathe, thecombinationlwith means for .rotating the Work, of a tool-carriage, meansfor traveling thetool-carriage .along the bed of the. lathe in Vonedirection, means for automatically-starting the work-rotating means andthe tool-carriage-traveling means when the tool-carriage is atv onelimit of its v.movement andA fo`r -automatically stopping saidwork-rotating means vand tool-carriagetraveling means when thetool-carriage is at the other limit of its movement, independent meansfor traveling the tool-carriage back to initial position when the meansaforesaid have stopped, and means for auto- ITO matically stopping saidtool-carriage-returning means when the tool-carriage arrives at itsinitial position.

2. In a lathe, the combination with driving means, of Work-rotatingmeans:a toolcarriage, means for traveling the tool-carriagealongtheilatheebed, 'reieasable means yfor operably connecting ordisconnecting both the workerotating means and thetoolcarriage-traveling means to the driving means aforesaid, a toolmovable on the toolcarriage, means for determining .the final depth ofcut, automatically-acting mechanism ycontrollin the releasableconnecting means aforesa' ,and means for. arresting the action of theautomatic; mechanism aforesaid when the final depthl of cut has beenmade to thereby release the Work-rotating means and thecarriage-traveling means from the driving means and thus stop theiraction.'

3. In a lathe, the combination with a toolcarriage, and means fortraveling said toolcarriage along the lathe-bed, of a tool movable onthe tool-carriage, means for determining the final depth of cut', arock-shaft operated by the tool-carriage at predetermined times,automatic mechanism controlledby said rock-shaft for automaticallystarting, stopping, and revelsing the travel `of thetool-carriage, andmeans automatically actuated when the tool has reached the final depthof cut Whichvprevents operation ofthe rock-shaft and automatic mechanismcontrolled thereby and thereby stops .the

, matically operating. the cam at the 'ends of the movement of vthetool-carriage.

5. In a lathe, the combination with a toolcarriage, of a toolLholdermovable thereon, means fo'r traveling'the tool-carriage in one directionalong the lathe-bed, independent means for traveling the tool-carriagein the otherldirection along the lathe-bed, means for automaticallywithdrawing and feeding said tool-holder at'thdend of a cut comprisingvaslidable cross-feedscrew, a slidable nut with which the cross-feed screwis lconnected by screw-threads, a ratchet-,Wheel connected to thecross-feed'screw, a movable cam engaging the slidable nut aforesaid, apawl for '4 turnlng the ratchet-wheel, means carried by the carrrforoper'ating the paWl, means for releasing the tool-carriage from itsadvancin traveling means at the end of the cut an connecting it theretoat theA beginning of the cut, a rock-shaft operated by the carriage atVthe limits of its movements, gearin interpoed betweenthe rock-shaft andt e cam an return feedmg means of fthe tool-carriage into and out ofoperative connection with the tool-carriage. I

' 6. In a lathe, the combination with a toolcarriage, of meansforadvancing said' toolcarriage along the lathe-bed, independent means fortravelingit back-again, automatic mechanism comprislng a movablecontrolling member, means operated from said movable e nut with which'the releasing means aforesaid, and means ,y controlled by therock-shaft for throwing thev member for starting and stoppingtheadvancing feeding means of the tool-carnage at predetermined limitsof the movement of the tool-carriage, means operated by said movablemember for-starting and stopping -the return feeding means of thecarriage at the predetermined limits of the movement of the'tool-carriage, a pivoted arm coperatingy with said movablevcontrollingmember, means acting on said armvto move it tol one side or the other ofits dead-center, and means actuated by thel tool-carriage at the limitsof its movement for automatically actuating said arm to thereby actuatethe movable controlling member aforesaid.

7. In a lathe, the combination with a toolcarriage, of means foradvancing said toolcarriage along the lathe-bed, independent means fortraveling it back again, automatic mechanism comprising almovablecontrolllng member, means operated from said movable member for startingand stopping the advancing feeding means of the tool-carnage atpredetermined limits of the movement of the tool-carriage, meansoperated by said movable member for lstarting and `stopplng the returnfeeding means of thecarriage vat the predetermined limits'of themovement of the tool-carriage, means for delaying the operation of thecarriage-returnlng means until 'after the carriage-advancing means hasstopped at one limit ofthe movement of the tool-carriage andforlstopplng the actlon of said carriage-returning means before thecarnage-advancing means begins to operate' at the other limit of themovement of the tool- Ioo y carriage, and means actuated by thetoolcarriage at the limits of its movement for automatically/ lingmember. y c

8. In a lathe, the combination with a toolcarriage, of means foradvancing said toolcarriage along the lathe-bed, `independent means fortraveling it back again, automatic f mechanism comprising a movablecontrolling member, means operated from sald movable member for startingand stoppingtlle advancing feeding means of the tool-carnage thetool-carriage, means operated by said movable member for starting andstopping the ,return feeding means ofthe carriage-at the predeterminedlimits of the movement of the tool-carriage, means for delaying theoperation of the carriage-returning means until after the vcarriageadvancing means has stopped at one limit of the movement of thetool-carriage and for stopping the action ofl saidcarriage-returnlnglmeans before the carriage-advancing means begins tooperate at the other limit of the movement of the toolcarriage, apivoted arm cooperating with the actuating the movable control- IIO atpredetermined limits of the movement of y izo` movable controllingmember, means acting on said arm to bmove it to one side or they otherof its dead-center, and means actuated iol ,by the tool-carriage at thelimits of its movement for automatically actuating the pivoted arm.

9. In a lathe, a tool-carriage, means for traveling the tool-carriagealong the lathebed, and automatic mechanism governing the meansaforesaid, comprising a movable controlling member, a pivoted arm forshifting said movable controlling member, means acting on said arm tomove it to one side or the other of its dead-center, an oscillatoryWheel operated by the movable controlling member and provided withengaging means,

s ing-the positively-'driven Wheel to the engag.

a positively-driven Wheel, means for clutching the positively-drivenWheel to the engaging means on the oscillatory Wheel at predeterminedtimes to cause rotation of said oscillatory wheel and automaticallyunclutching said Wheels at other times to stop theoscillatory Wheel,means for automatically operating the pivoted arm and movablecontrolling member at redetermined times, and means controlled. y theoscillatory wheel governing the tool-carriage-traveling means.

10. In a lathe, a tool-carriage, means for traveling the tool-carriagealong the lathebed, and automatic mechanism governing the meansaforesaid, comprising a movable controlling member, a pivoted arm forshifting said'movable controlling member, means acting on said arm tomove it to one side or the other` of its` dead-center, an oscillatorywheel operated by the movable controlling member and 'rovided withengaging means, a positivelyriven wheel, means for clutching means onthe oscillatory Wheel at predetermined times to cause rotation of ,saidos-` cillatory Wheel and automatically unclutching said Wheels at othertimes to stop the oscillatory Wheel, means for automatically operating.the pivoted arm and movable controlling member at predetermined timesfrom the tool-carriage by the movement thereof, and means controlled bythe oscillatory Wheel governing the tool-carriage-traveling means.

1,1. In a lathe, a tool-carriage, means for traveling the tool-carriagealong the lathebed, and automatic mechanism governing the meansaforesaid comprising a movable controlling member, la pivoted arm forshifting said movable .controlling member, means acting on said arm tomove it to one side or the other of its dead-center, an oscillatorywheel operated by the movable controlling member and provided withengaging means, oppo- 'sitely-rotating positively-driven Wheels,independent devices for clutching the respective positively-drivenWheels to the engaging means of the oscillatory Wheel at differentpredetermined times according to the direction of movement of theoscillatory wheel to cause rotation of said oscillatory wheel andautomatically unclutching the respective positively-driven Wheels fromthe oscillatory Wheel at other predetermined times to stopcarriage-traveling means according tothe direction of movement of theoscillatory Wheel.

12. In a lathe, a tool-carriage, means for traveling the tool-carriagealong the lathebed, and automatic mechanism governing the meansaforesaid comprising an oscillatory Wheel having rims provided withnotches,-oppositely-driven wheels, inde endent plungers normallyrestrained by t ie respective rims aforesaid but adapted to drop intothe notches to move 'with the oscillatory Wheel, means on theoppositely-driven Wheels for engaging the plungers alternately atpredetermined times When in the notches, means for releasing theplungers from the notches at predetermined times, means for' actuatingthe oscillatory Wheel at different predetermined times in oppositedirections, and means controlled by the oscillatory Wheel to alternatelystop and start the tool-carriagetraveling means according to thedirection of v movement ofthe oscillatory wheel.

' 13.j In a lathe, a tool-carriage, means for traveling thetool-carriage along the lathebed, and automatic mechanism governing themeans aforesaid comprising an oscillatory Wheel having rims providedwith notches, oppositely-driven Wheels, inde endent plungers normallyVrestrained by t c respective rims aforesaid but adapted to drop into thenotches to move with the oscillatory wheel, means on theoppositely-driven Wheels for engaging4 the plungers alternatelyat'predetermined times when in the notches, means for releasing theplungers from the notches at predetermined times, means controlled bythe tool-carriage at predetermined times f or actuating the oscillatoryWheel in opposite directions, and means controlled by t c oscillatoryWheel to alternately stop and start the tool-carriage-travelingl meansaccording to the position of the tool-carriage.

In testimony whereof Iaflix my signature in the presence of twowitnesses.

' JOHN BUCKLEY. Witnesses:

AMBRosE H. BUCKLEY, CHAs. G. Roor.

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